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2924.29.62.50/Carbostyril (4-Quinolone Derivative)/China

Carbostyril (4-Quinolone Derivative) from China

Carbostyril derivatives serve as intermediates for aromatic amide drugs like fluoroquinolones. Classified under HTS 2924.29.62.50 as 'other' aromatic cyclic amides used in pharmaceuticals. Structure contains fused cyclic amide ring per chapter 29 specifications.

Duty Rate — China → United States

19%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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Import Tips

• Register as Type II DMF for intermediates

• Declare synthetic route to avoid dual-use scrutiny